Service combination reconstruction method under dynamic network environment

A technology of service composition and dynamic network, applied in the field of service composition reconstruction in a dynamic network environment, can solve the problems of service composition failure and low service composition reconstruction speed, and achieve the effects of low network overhead, guaranteed speed, and fast response speed

Inactive Publication Date: 2012-01-04
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for rebuilding service composition in a dynamic network environment, which overcomes the above-mentioned shortcoming of low service composition reconstruction speed and solves th...

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  • Service combination reconstruction method under dynamic network environment
  • Service combination reconstruction method under dynamic network environment

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[0018] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0019] The service composition rebuilding method under the dynamic network environment described in the embodiment of the present invention is that in the service composition execution stage, combined with the cost function family, the suboptimal path is tracked by the client node in real time in the form of a small traffic pseudo service flow, and the service is interrupted. On the basis of the detection method determining the cause of service failure, the cross-level decision-making algorithm decides to perform route repair in the underlying network, or / and perform service replacement in the service network.

[0020] The specific process is: ...

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Abstract

The invention discloses a service combination reconstruction method under a dynamic network environment. According to the invention, at a phase of execution of service combination, a family of cost functions is combined and real-time tracking is carried out on a suboptimal path by a client node by a low-flow pseudo service flow mode; and on the basis that a reason of a service failure is determined by a detection method during interruption of a service, a crosslevel decision algorithm decides to execute route restoration at a substrate network or/ and execute service replacement in a service network. The concrete process is as follows: a reason on service combination interruption is detected and identified at full speed; a link interruption module is detected by an IEEE802.11ACK frame module at a mechanism substrate, a route interruption module is detected by a handshake mechanism module at a route layer and a service interruption module is detected by a node time efficient module at a service layer; service combination reconstruction is divided into two levels; on the condition that the service combination is failed, a cross level service combination reconstruction module decides to execute route restoration at a substrate network or/ and to execute service replacement in a service network.

Description

technical field [0001] The invention belongs to the technical field of network services, and in particular relates to a method suitable for providing continuous, high-quality services for the network when the network topology is highly unstable, when the network topology changes rapidly and nodes and links fail frequently. Service Composition Reconstruction Method in Dynamic Network Environment of Service Composition. Background technique [0002] With the rapid development of computer technology and network technology, the widespread popularization of dynamic network has brought great changes to human life style, and opened up a new research field of service science based on dynamic network. In contrast, the more core service composition technology in service science has not been deeply studied due to its strong interdisciplinary nature, and has become a bottleneck hindering the development of service science in a dynamic network environment. Different from the traditional...

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Application Information

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IPC IPC(8): H04L12/24
Inventor 杨扬曾明孙莉莉米振强安建伟
Owner UNIV OF SCI & TECH BEIJING
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